package thinkinginjava.arrays;
import java.util.Arrays;
import java.util.Random;

public class IceCream {
	private static Random rand = new Random(47);
	static final String[] FLAVORS = {
		"Chocolate","Strawberry" , "Vanilla Fudge Swirl",
		"Mint Chip", "Mocha Almond Fudge","Rum Raisin",
		"Praline Cream","Mud Pie"
	};
	public static String[] flavorSet(int n ){
		if (n>FLAVORS.length)
			throw new IllegalArgumentException("Set too big");
		String[] results = new String[n];
		boolean[] picked =  new boolean[FLAVORS.length];
		for (int i  = 0 ;i <n;i++){
			int t ;
			do
				t= rand.nextInt(FLAVORS.length);
			while(picked[t]);
			results[i] = FLAVORS[t];
			picked[t] = true;
		}
		return results;
	}
	public static void main(String[] args) {
         for(int i = 0 ;i<5;i++)
        	 System.out.println(Arrays.toString(flavorSet(3)));
	}

}
